Integrate omniauth-google

Author: rishijain

Gemfile

@@ -44,6 +44,10 @@ gem "thruster", require: false
 # Use Active Storage variants [https://guides.rubyonrails.org/active_storage_overview.html#transforming-images]
 # gem "image_processing", "~> 1.2"
 
+# auth gems
+gem 'omniauth'
+gem 'omniauth-google-oauth2'
+
 group :development, :production do
   gem "sidekiq"
   gem "sidekiq-scheduler"

Gemfile.lock

@@ -121,6 +121,12 @@ GEM
     et-orbi (1.2.11)
       tzinfo
     event_emitter (0.2.6)
+    faraday (2.13.1)
+      faraday-net_http (>= 2.0, < 3.5)
+      json
+      logger
+    faraday-net_http (3.4.0)
+      net-http (>= 0.5.0)
     ffi (1.17.1-aarch64-linux-gnu)
     ffi (1.17.1-aarch64-linux-musl)
     ffi (1.17.1-arm-linux-gnu)
@@ -133,6 +139,7 @@ GEM
       raabro (~> 1.4)
     globalid (1.2.1)
       activesupport (>= 6.1)
+    hashie (5.0.0)
     http-accept (1.7.0)
     http-cookie (1.0.8)
       domain_name (~> 0.5)
@@ -151,6 +158,8 @@ GEM
       actionview (>= 5.0.0)
       activesupport (>= 5.0.0)
     json (2.10.2)
+    jwt (2.10.1)
+      base64
     kamal (2.6.1)
       activesupport (>= 7.0)
       base64 (~> 0.2)
@@ -182,7 +191,11 @@ GEM
     mini_mime (1.1.5)
     minitest (5.25.5)
     msgpack (1.8.0)
+    multi_xml (0.7.2)
+      bigdecimal (~> 3.1)
     mutex_m (0.3.0)
+    net-http (0.6.0)
+      uri
     net-imap (0.5.6)
       date
       net-protocol
@@ -213,6 +226,26 @@ GEM
       racc (~> 1.4)
     nokogiri (1.18.8-x86_64-linux-musl)
       racc (~> 1.4)
+    oauth2 (2.0.12)
+      faraday (>= 0.17.3, < 4.0)
+      jwt (>= 1.0, < 4.0)
+      logger (~> 1.2)
+      multi_xml (~> 0.5)
+      rack (>= 1.2, < 4)
+      snaky_hash (~> 2.0, >= 2.0.3)
+      version_gem (>= 1.1.8, < 3)
+    omniauth (2.1.3)
+      hashie (>= 3.4.6)
+      rack (>= 2.2.3)
+      rack-protection
+    omniauth-google-oauth2 (1.2.1)
+      jwt (>= 2.9.2)
+      oauth2 (~> 2.0)
+      omniauth (~> 2.0)
+      omniauth-oauth2 (~> 1.8)
+    omniauth-oauth2 (1.8.0)
+      oauth2 (>= 1.4, < 3)
+      omniauth (~> 2.0)
     opus-ruby (1.0.1)
       ffi
     ostruct (0.6.1)
@@ -238,6 +271,10 @@ GEM
     raabro (1.4.0)
     racc (1.8.1)
     rack (3.1.15)
+    rack-protection (4.1.1)
+      base64 (>= 0.1.0)
+      logger (>= 1.6.0)
+      rack (>= 3.0.0, < 4)
     rack-session (2.1.1)
       base64 (>= 0.1.0)
       rack (>= 3.0.0)
@@ -338,6 +375,9 @@ GEM
       rufus-scheduler (~> 3.2)
       sidekiq (>= 6, < 8)
       tilt (>= 1.4.0, < 3)
+    snaky_hash (2.0.3)
+      hashie (>= 0.1.0, < 6)
+      version_gem (>= 1.1.8, < 3)
     solid_cable (3.0.8)
       actioncable (>= 7.2)
       activejob (>= 7.2)
@@ -381,6 +421,7 @@ GEM
     unicode-emoji (4.0.4)
     uri (1.0.3)
     useragent (0.16.11)
+    version_gem (1.1.8)
     web-console (4.2.1)
       actionview (>= 6.0.0)
       activemodel (>= 6.0.0)
@@ -422,6 +463,8 @@ DEPENDENCIES
   importmap-rails
   jbuilder
   kamal
+  omniauth
+  omniauth-google-oauth2
   pg (~> 1.5.9)
   propshaft
   puma (>= 5.0)

app/controllers/sessions_controller.rb

@@ -0,0 +1,13 @@
+class SessionsController < ApplicationController
+  def create
+    auth = request.env['omniauth.auth']
+    session[:user_token] = auth.credentials.token
+    session[:user_email] = auth.info.email
+    redirect_to root_path
+  end
+
+  def destroy
+    reset_session
+    redirect_to root_path
+  end
+end

app/helpers/sessions_helper.rb

@@ -0,0 +1,2 @@
+module SessionsHelper
+end

config/initializers/omniauth.rb

@@ -0,0 +1,4 @@
+Rails.application.config.middleware.use OmniAuth::Builder do
+  provider :google_oauth2, ENV['GOOGLE_CLIENT_ID'], ENV['GOOGLE_CLIENT_SECRET']
+end
+OmniAuth.config.allowed_request_methods = %i[get]

config/routes.rb

@@ -5,10 +5,12 @@
   # Can be used by load balancers and uptime monitors to verify that the app is live.
   get "up" => "rails/health#show", as: :rails_health_check
 
+  get '/auth/:provider/callback', to: 'sessions#create'
+
   # Render dynamic PWA files from app/views/pwa/* (remember to link manifest in application.html.erb)
   # get "manifest" => "rails/pwa#manifest", as: :pwa_manifest
   # get "service-worker" => "rails/pwa#service_worker", as: :pwa_service_worker
 
   # Defines the root path route ("/")
-  # root "posts#index"
+  root "static#home"
 end

test/controllers/sessions_controller_test.rb

@@ -0,0 +1,7 @@
+require "test_helper"
+
+class SessionsControllerTest < ActionDispatch::IntegrationTest
+  # test "the truth" do
+  #   assert true
+  # end
+end